Strategic Overview
- Status
- Patched in 9.1
- Affected Plugin
- WP Cerber Security, Anti-spam & Malware Scan
- Affected Version
<= 9.0- CVSS
- 5.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2022-2939
At a glance
CVE-2022-2939 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the WP Cerber Security, Anti-spam & Malware Scan WordPress plugin, affecting versions <= 9.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 9.1; sites on affected versions should update now. Disclosed September 2022, reported by Margaux DABERT.
Vulnerability Overview
The WP Cerber Security plugin for WordPress is vulnerable to security protection bypass in versions up to, and including 9.0, that makes user enumeration possible. This is due to improper validation on the value supplied through the 'author' parameter found in the ~/cerber-load.php file. In vulnerable versions, the plugin only blocks requests if the value supplied is numeric, making it possible for attackers to supply additional non-numeric characters to bypass the protection. The non-numeric characters are stripped and the user requested is displayed. This can be used by unauthenticated attackers to gather information about users that can targeted in further attacks.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
WP Cerber Security, Anti-spam & Malware Scan <= 9.0 carries this weakness at author, and reaching it takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For WP Cerber Security, Anti-spam & Malware Scan the fix is 9.1: builds <= 9.0 are affected, anything from 9.1 onward is not.
Remediation
Update to version 9.1, or a newer patched version
How does WordSec protect against this?
The fix is the thing that ends this: WP Cerber Security, Anti-spam & Malware Scan 9.1 closes this, and updating the plugin is the step that ends it.
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in WP Cerber Security, Anti-spam & Malware Scan
- 9.8CVE-2021-37597: WP Cerber Security < 8.9.3 Multifactor Bypass
CVE-2021-37597 - 7.2CVE-2022-4712: WP Cerber Security <= 9.1 Stored Cross-Site Scripting
CVE-2022-4712 - 7.2CVE-2022-0429: WP Cerber Security <= 8.9.5.2 Stored XSS
CVE-2022-0429 - 7.2CVE-2016-10990: Cerber Security, Anti-spam & Malware Scan Stored XSS
CVE-2016-10990 - 5.5WP Cerber Security <= 9.0 Stored Cross-Site Scripting
- 5.3CVE-2022-4100: WP Cerber Security <= 9.4 IP Protection Bypass
CVE-2022-4100 - 5.3CVE-2021-37598: WP Cerber < 8.9.3 Access Bypass Control
CVE-2021-37598
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C